An administrator needs to securely access and manage servers located in an isolated, high-security network segment. To minimize the attack surface, direct administrative access from the general corporate network is prohibited. Which of the following should be used to provide a controlled and monitored entry point for this purpose?
A jump server, also known as a jump host or bastion host, is a hardened server that acts as a secure intermediary and single point of entry for administrators to connect to other devices in a separate security zone. This approach centralizes access control and monitoring.
A proxy server primarily acts as an intermediary for user requests to other servers (like web servers), but it is not specifically designed for administrative access sessions. A load balancer distributes incoming traffic across multiple servers to improve availability and performance but does not serve as a secure administrative gateway. A VPN concentrator is used to establish secure, encrypted tunnels for remote access, but it typically provides broader network-level access rather than the specific, audited host-to-host administrative access that a jump server provides.
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